EP0186142A3 - Two wire bidirectional digital transmission system - Google Patents

Two wire bidirectional digital transmission system Download PDF

Info

Publication number
EP0186142A3
EP0186142A3 EP85116260A EP85116260A EP0186142A3 EP 0186142 A3 EP0186142 A3 EP 0186142A3 EP 85116260 A EP85116260 A EP 85116260A EP 85116260 A EP85116260 A EP 85116260A EP 0186142 A3 EP0186142 A3 EP 0186142A3
Authority
EP
European Patent Office
Prior art keywords
wire
voltage signal
terminal
wires
transmission system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85116260A
Other languages
German (de)
French (fr)
Other versions
EP0186142A2 (en
Inventor
Michael Cooperman
Richard W. Sieber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Verizon Laboratories Inc
Original Assignee
GTE Laboratories Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GTE Laboratories Inc filed Critical GTE Laboratories Inc
Publication of EP0186142A2 publication Critical patent/EP0186142A2/en
Publication of EP0186142A3 publication Critical patent/EP0186142A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

A two-wire bidirectional transmission system for trans­ mitting electrical signals simultaneously in opposite direc­ tions between terminals over a pair of wires wherein the transmitter at one terminal transmits a voltage signal over one of said wires while the transmitter at the second terminal generates a voltage signal over the same wire, the second wire being grounded at each end. Impedance matching resistors, that is resistors matched to the impedance of the two wires, are coupled between each of the transmitters and the wire upon which the voltage signal is generated. A subtractor circuit is provided at each of the terminals for linearly subtracting a signal proportional to one-half of the voltage transmitted and thereby receiving at each terminal a voltage signal equal to one-half of the voltage transmitted by the opposite terminal.
EP85116260A 1984-12-28 1985-12-19 Two wire bidirectional digital transmission system Withdrawn EP0186142A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/687,372 US4638473A (en) 1984-12-28 1984-12-28 Two wire bidirectional digital transmission system
US687372 1984-12-28

Publications (2)

Publication Number Publication Date
EP0186142A2 EP0186142A2 (en) 1986-07-02
EP0186142A3 true EP0186142A3 (en) 1988-03-30

Family

ID=24760210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85116260A Withdrawn EP0186142A3 (en) 1984-12-28 1985-12-19 Two wire bidirectional digital transmission system

Country Status (5)

Country Link
US (1) US4638473A (en)
EP (1) EP0186142A3 (en)
JP (1) JPS61158230A (en)
AU (1) AU5110685A (en)
CA (1) CA1255369A (en)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736361A (en) * 1984-12-28 1988-04-05 Gte Laboratories Incorporated Digital switching system with two-directional addressing rams
US4630284A (en) * 1984-12-28 1986-12-16 Gte Laboratories Incorporated Low power line driving digital transmission system
AU5110585A (en) * 1984-12-28 1986-07-03 Gte Laboratories Incorporated Digital switching system
US4805196A (en) * 1987-04-29 1989-02-14 Gte Laboratories Incorporated Line delay compensation for digital transmission systems utilizing low power line drivers
DE3715588C1 (en) * 1987-05-09 1988-09-08 Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De
US4807258A (en) * 1987-11-17 1989-02-21 Gte Laboratories Incorporated Method for synchronizing a digital communication system
US4859877A (en) * 1988-01-04 1989-08-22 Gte Laboratories Incorporated Bidirectional digital signal transmission system
US5068850A (en) * 1989-06-12 1991-11-26 Moore Industries-International, Inc. Parameter value communication system
JP2778245B2 (en) * 1990-11-13 1998-07-23 日本電気株式会社 Josephson drive circuit with polarity switching
DE69211584T2 (en) * 1991-03-14 1996-10-31 Bull Sa Method and circuit for transmission detection for bidirectional, differential route
FR2674083B1 (en) * 1991-03-14 1994-01-07 Bull Sa BIDIRECTIONAL LINK TRANSCEIVER, INTEGRATED CIRCUIT INCORPORATING THE SAME, AND APPLICATION TO COMMUNICATION BETWEEN UNITS OF A COMPUTER SYSTEM.
FR2674082B1 (en) * 1991-03-14 1994-11-25 Bull Sa TEST METHODS FOR BIDIRECTIONAL SERIES TRANSMISSIONS AND CIRCUITS FOR THEIR IMPLEMENTATION.
FR2674076A1 (en) * 1991-03-14 1992-09-18 Bull Sa INTEGRATED CIRCUIT WITH ENSURED IMPEDANCES AND APPLICATION TO RECEIVER TRANSMITTERS, IN PARTICULAR FOR COMMUNICATION BETWEEN UNITS OF A COMPUTER SYSTEM.
US5216667A (en) * 1991-05-24 1993-06-01 International Business Machines Corporation Simultaneous bidirectional transceiver
JP3133499B2 (en) * 1991-10-16 2001-02-05 古河電気工業株式会社 Multiplex transmission method
JP3137809B2 (en) * 1993-07-20 2001-02-26 株式会社日立製作所 Transmitter / receiver circuit
DE4423333C1 (en) * 1994-06-21 1995-08-31 Siemens Ag Measuring device for integrated services digital transmission network transmission path interface
US5541535A (en) * 1994-12-16 1996-07-30 International Business Machines Corporation CMOS simultaneous transmission bidirectional driver/receiver
US5578939A (en) * 1995-01-23 1996-11-26 Beers; Gregory E. Bidirectional transmission line driver/receiver
US5568064A (en) * 1995-01-23 1996-10-22 International Business Machines Corporation Bidirectional transmission line driver/receiver
US5631757A (en) * 1995-06-07 1997-05-20 Lucent Technologies Inc. Full-duplex data communication system using different transmit and receive data symbol lengths
US5666354A (en) * 1995-12-20 1997-09-09 International Business Machines Corporation CMOS bi-directional differential link
US5815107A (en) * 1996-12-19 1998-09-29 International Business Machines Corporation Current source referenced high speed analog to digitial converter
US5923276A (en) * 1996-12-19 1999-07-13 International Business Machines Corporation Current source based multilevel bus driver and converter
US7149242B1 (en) 2000-05-31 2006-12-12 Bitrage, Inc. Communications system for improving transmission rates and transmission distances of data signals across communications links
US6823001B1 (en) 2000-05-31 2004-11-23 Bitrage, Inc. Dual stage communication processor
US20040151237A1 (en) * 2000-05-31 2004-08-05 Bitrage, Inc. Satellite communications system
US6771675B1 (en) 2000-08-17 2004-08-03 International Business Machines Corporation Method for facilitating simultaneous multi-directional transmission of multiple signals between multiple circuits using a single transmission line
US7095788B1 (en) 2000-08-17 2006-08-22 International Business Machines Corporation Circuit for facilitating simultaneous multi-directional transmission of multiple signals between multiple circuits using a single transmission line
AU2002213372A1 (en) * 2000-10-23 2002-05-06 Motorola, Inc. Apparatus for full duplex communications over a single wire
DE10318523B4 (en) * 2003-04-24 2012-02-02 Qimonda Ag Method for setting a termination voltage and an input circuit
US7792196B2 (en) * 2004-12-28 2010-09-07 Intel Corporation Single conductor bidirectional communication link
US7639598B2 (en) * 2006-01-31 2009-12-29 Szabolcs Sovenyi Simultaneous full-duplex communication over a single electrical conductor
JP4877312B2 (en) * 2008-11-05 2012-02-15 ソニー株式会社 Information processing apparatus and full-duplex transmission method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730993A (en) * 1972-01-13 1973-05-01 Tektronix Inc Transmission line circuit having common delay line for two signal paths of opposite direction
US4162371A (en) * 1977-01-14 1979-07-24 Cselt-Centro Studi E Laboratori Telecomunicazioni S.P.A. Method of and means for establishing two-way communication between two stations interconnected by a single signal link
EP0026931A1 (en) * 1979-10-04 1981-04-15 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Transceiver for full duplex transmission of digital signals on a single line
EP0186139A2 (en) * 1984-12-28 1986-07-02 Gte Laboratories Incorporated Time division multiplexing RAM
EP0186131A2 (en) * 1984-12-28 1986-07-02 Gte Laboratories Incorporated Digital switching system with two-directional addressing rams
EP0186132A2 (en) * 1984-12-28 1986-07-02 Gte Laboratories Incorporated Digital switching system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL170688C (en) * 1976-06-28 1982-12-01 Philips Nv DEVICE FOR SIMULTANEOUS TWO WAY DATA TRANSMISSION ON TWO WIRE CONNECTIONS.
NO140648C (en) * 1977-10-24 1983-03-29 Elektrisk Bureau As DIRECTIVE CONNECTOR.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730993A (en) * 1972-01-13 1973-05-01 Tektronix Inc Transmission line circuit having common delay line for two signal paths of opposite direction
US4162371A (en) * 1977-01-14 1979-07-24 Cselt-Centro Studi E Laboratori Telecomunicazioni S.P.A. Method of and means for establishing two-way communication between two stations interconnected by a single signal link
EP0026931A1 (en) * 1979-10-04 1981-04-15 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Transceiver for full duplex transmission of digital signals on a single line
EP0186139A2 (en) * 1984-12-28 1986-07-02 Gte Laboratories Incorporated Time division multiplexing RAM
EP0186131A2 (en) * 1984-12-28 1986-07-02 Gte Laboratories Incorporated Digital switching system with two-directional addressing rams
EP0186132A2 (en) * 1984-12-28 1986-07-02 Gte Laboratories Incorporated Digital switching system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON SUBSCRIBER LOOPS AND SERVICES, Munich, 15th - 19th September 1980, NTG-Fachberichte, vol. 73, VDE-Verlag GmbH, Berlin, DE; M.G. VRY et al.: "The design of a 1+1 system for digital signal transmission to the subscriber" *

Also Published As

Publication number Publication date
CA1255369A (en) 1989-06-06
EP0186142A2 (en) 1986-07-02
JPS61158230A (en) 1986-07-17
AU5110685A (en) 1986-07-03
US4638473A (en) 1987-01-20

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Inventor name: COOPERMAN, MICHAEL

Inventor name: SIEBER, RICHARD W.